As stated in the header, We are asking to configure automatic activation of the PhishHook add-in. For a medium-large organizations, It is not productive to request all users to activate the add-in manually.
The Outlook button is necessary for so many reasons (Incident reporting, reduce answering specific user's notifications, reduce Help Desk tickets, improve statistics reports etc.)
This will ease the implementation(or make it possible for large organizations) and be useful for all customers
This idea is currently under review. Thank you for your feedback!